the trick with medium specificity is that everything is subjective, of course, which means people will reasonably disagree on what the unique attributes of a medium even are, which is awesome!
You also see innovation within media that changes how those attributes are weighed sometimes. It's pretty hard to pull that off and I earnestly think to redefine a genre or medium, the artist has to be highly knowledgeable about what the conventions are in order to remake them.